1 kg/m3 (kg/m3) = 0.001 g/cm3 = 0.0624 lb/ft3
1 lb/ft3 = 16.02 kg/m3 (kg/m3)
1 lb/in3 = 27679.9 kg/m3 (kg/m3)
1 lb/gal3 = 119.826 kg/m3 (kg/m3)
1 lb/gal3 = 99.776 kg/m3 (kg/m3)
1 lb/bbl3 = 2.853 kg/m3 (kg/m3)
1 boimetric density (B) = 140/15.5°C
API = 141.5/15.5°C weight - 131.5